Metal-working machine



Patented Dec. 28, 1920.

2 SHEETS-SHEET 1.

INVENTOR. 56/197 M W H0500 BY r V ATORNEY Fig. a

' B.,M. W. HANSON.

METAL WORKING MACHINE. APPLICATION FILED AUG- 19, I919. I

Patented Dec. 28, 1920.

2 SHEETSSHEET 2- y \42 INVENTOR. 512/1 7 M [4/ Hanson f BY m BENG'I M. W. HANSON, 0F HARTFORD, CONNECTICUT.

METAL-WORKING MACHINE.

Application filed August 19, 1919.

To all whom it may OMLOQW/b.

Be it known that I, BnNe'r M. W. Hanson, a citizen of the United States, and a resident of Hartford, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Metal-Working Machines, of which the following is a specification.

This invention relates, generally, to metal working machines of the type having a reciprocating tool operative on the work when moved in one direction and inactive when moved in the opposite direction, and the invention has as one of its objects to provide a novel construction and arrangement whereby the tool is reciprocated and thrown into and out of operative position on its active and inactive strokes, respectively. It is also an aim of the present invention to provide a tool-holder having novel and advantageous features of construction.

In. the present illustrative disclosure of my invention, I have shown and described my invention applied to a die-shaper, but it is evident that my invention is susceptible for use in other kinds of machines.

In the drawings I have illustrated a vertical die-shaper but it Will hereinafter be pointed out more in detail that my invention is adapted for use in machines where the tool is moved horizontally.

In the accompanying drawings:

Figure l is a sectional view of a portion. of a machine to which my invention is ap plied.

Fig. 2 is a front elevational view of the machine with aportion of the ram broken away.

Fig. 3 is a sectional view taken substantially on line 3-3 of Fig. 1.

Fig. 4 is a front elevation of a plate.

Fig. 5 is a sectional view taken horizontally through the tool-holder on a line 5-5 of Fig. 1, and

Fig. 6 is a side view of a binding member with a portion thereof broken away.

Referring to the drawings, a designates a portion of the machine frame, only so much thereof being illustrated as is necessary to understand the present invention; Z), a slidable tool-holder carrier (referred to hereinafter as a ram) slidably mounted in ways 2 on the outer face of the frame a and being recessed as at 3; c, a tool-holder having a head 7" and a clapper (2 carried by but having a limited movement relative to Specification of Letters latent.

iatented Dec. 238, 192@.

Serial No. 318,532.

the ram 6, in the present illustrative disclosure the clapper being pivoted to the ram by means of a pin 41-, so that the tool-holder 0 can rock slightly to throw the tool into and out of operative position; g, a slide having a slight reciprocating movement within the recess of the ramand having a dependmg portion to the rear of the clapper; and 2' an li-shaped link connecting the slide 9 to the outer end of a rocker arm h pivoted in the frame a and extending into the recess 3 of the ram.

On the rear face of the clapper d are a pair of spaced oppositely inclined surfaces 6 and 7 and on the depending portion of the slide 9 are oppositely inclined surfaces 16 and 17 adapted to cooperate with the surfaces 6 and 7 respectively, when the slide is given a reciprocating movement by rocking the walking beam or arm 72. It will be noted that the distance between the surfaces 6 and 7 of the clapper is slightly greater than the distance between the surfaces 16 and 17 of the slide so that the slide will have a slight movement independently of the clapper and the latter may rock about its pivot 4. Forward movement of the clapper is limited by the engagement of the upper surface 20 of the tool-head against the lower edge 21 of the ram and the ex tent of rearward movement of the tool-head is regulated by a screw 23 against which the upper end of the clapper is adapted to engage. 2d designates a block secured to the ram and the forward face of the upper end of the slide 9 has a sliding engagement therewith. .lhe link 2' is connected to the portion of the slide which extends over the clapper so that power is transmitted to the slide on a line which is in proximity to the line of cutting and thus shearing strains on the parts are reduced to a minimum.

It will be seen from the foregoing description that the slideg and the link i are not directly connected to the ram and therefore these members have a slight reciprocating movement relative thereto. My improved structure is a self-contained one in that the slide I which moves the tool-holder relative to the ram, reciprocates with the ram and tool-holder, and therefore readjustment of the parts is not necessary where the length of the cut to be taken is varied or the length of the stroke of the rocking-arm is changed. The cutting is done on the downward stroke of the tool. When the rocking arm it starts to move. downwardly, the slide 9 will be moved downwardly a slight distance while the ram remains stationary, and the inclined surface 17' of the slide is brought against the opposed surface 7 of the clapper which is thereupon rocked about its pivot in a direction to move the tool-head outwardly until the shoulder or face 20' of the tool-head engages the abutment formed by the lower end 21 of the ram, and the tool is in operative position, Upon further downward movement of the slide 9,. the clapper and the. ram move downwardly in unison and the tool takes a cut inthe work. Due to the arrangement ofthe inclined surfaces 7 and'17, the lower end of the slide acts in the nature of a wedge so that the tool-holder is, held. firmly in active position. When the rocker arm It starts to. move upwardly, the slide moves up independently of the ram until. the shoulder 16: of the slide engages the shoulder 6 of the clapper and the clapper is. rocked into position where its upperend engages the screw 23. and thereafter the ram, the clapper and the slide will move upwardly in unison. After the clapper is brought into. engagement with the screw 23, the tool is in such position that it is free of the work and its cutting edge is not impaired on its inactive or inoperative stroke.

The structure thus far described may be used on a horizontal shaperor a vertical one, but when my improvements are employed on a vertical 8118 1361, it is preferable to. so. arrange the parts that. upon downward movement of the slide, theram will not move .until after: the shoulder 17 of the slide is brought into engagement with the. shoulder 7 of theclapper to. throw the tool into outward operative position. It is evident that by regulating the friction between the ram and the ways of the frame downward. movement of the ram can be retarded but this is open! to numerous objections. In the present. illustrative disclosure of my invention, I have shown spring suspension means for retarding the movement of the ram and this means comprises in part. a plate3O secured to the; rear face of: the ram and. having a housing 31 provided with a vertical hole. Projecting. frornthev rear face of the slide 9 and extending through an opening 32 in the plate..30, is a hub 33 having an opening which is in. alinement with: the. opening of: the housing 31. There issuiiicient clearance between the hub. and the plate 30 to allow the slide to have the requisite movement. re-l'atiwe to the. ram. Positioned'within the housing 31 and; engaging. at its lower endv shown into the upper threaded end of the housing. The lower end of the pin extends beyond the hub 33 and has a slot in order that adjustment of the spring can be conveniently arrived at from below. This spring is so adjusted that it will just support the wei ht of the ram and the toolholder 0. If we assume that the tool has just completed its downward stroke and the rocker arm h is starting on its upward stroke, it is clear that the slide g will move up while. the ram remains stationary until the surface 16 of the slide engagesthe; surface 6 of the clapperv and during thismovement the spring is. compressed. The spring will remain in a compressed state until the rocker arm reaches the top of its stroke and then starts down, when the compressed spring exerts its force. to hold the ram, together with the clapper carried thereby, against downward movementv until. the surface 117 of the slide has comev into engagement with the surface 7 and the tool-holder is thrown forward. This insuresv that the before the tool; reaches the. work.

The tool-holder shown: in. the drawings is of improved construction and is, of course, adapted for other uses than in connection with the clapper operated in the particular manner above described.

The forward. face of the tool-head f of the tool-holder is slotted each wall of this slot 39 having an arcuate portion and a portion all to each side of the arcuate portion inclined outwardly from the. central line. of the slot. Thus the slot has a circular socket 40 and flaring ends provided. with diverging walls. This arrangement permits angular adjustment of the tool in a plane parallel with the bottom of the slot.

Extending. through the tool-head f at right angles to the bottom of the slot 39 and opening concentrically into the socket 40 is a hole 42 which receives the stem 43' of a. binding member having an. enlarged circular head4-5 fittingv snugly within the; socket 40. The rear end of the stem 43 is threaded as shown so as to receive a nut 46. The forward end of the binding member. is. diametrically slotted as at 47 and the forward portion of this slot. is of reduced width so as to provide shoulders 48 adaptedto engage against the forward faces 49 of the base of the tool 50. The tool, the cutting face of which may be of any desired shape, isjof T-shape in cross section and the base. of the tool is. of less depth than is the enlarged portion of. the slot 47. The base of the. tool is tapered as shown so that the faces 49 are inclined downwardly and outwardly and the shoulders 4L8 of. the binding 'member are similarly inclined. It. will be noted. that the front faceof the tool is inclined. backwardly from its cutting edge toward the tool-head so that only the cutting edge will engage the work and everything thereabove will clear it.

It is apparent that in securing the tool in place on the head, the binding member is moved to partially withdraw the head 45 from the socket 4-0, as shown in Fig. 5; the smaller end of the tool is inserted into the slot 47 and then moved upwardly into proper position, and thereafter the nut 46 is turned up on the stem 13 so that the base of the tool is securely clamped between the shoulders 4-8 of the binding member and the bottom of the slot 39. When the tool cuts into the work, the tool tends to move upwardly on the head, and as the base of the tool 50 is tapered, the tool is thereby more securely wedged in place. It is to be understood that the present disclosure of my invention is by way of illustration only and is not to be taken as restrictive thereof and that the invention is susceptible of various modifications and changes which would be within the spirit of the invention without departing from the scope of the following claims.

What I claim is 1. A carrier, a tool holder carried thereby, means for moving said tool holder relative to said carrier, and power driven means positively connected to said moving means.

2. A carrier, a tool holder carried thereby,

, means for moving the latter relative to said carrier, operating means, and a direct connection apart from said carrier between said operating means and moving means.

3. A carrier member, an operating member, and a tool-holder interposed between said members and movably carried by one of them.

4. A carrier member, an operating member, and a tool-holder interposed therebe tween and carried by and movable relative to said carrier member.

A carrier member, operating means,

7 and a tool-holding member interposed therebetween and supported by said carrier member for rocking movement.

6. A carrier, a tool-holder carried by and movable relative thereto, and operating means associated with said holder to move the same relative to the carrier and acting therethrough to move said carrier.

7. A carrier, a tool-holder pivoted thereon, and operating means acting on said holder to rock the same on said carrier and then move the carrier and holder in unison.

8. A carrier, a tool-holder movable thereon, and operating means associated with said holder for moving the same into and out of operative position and reciprocating said carrier in opposite directions.

9. A carrier, a tool-holder movable thereon, and means for moving said tool-holder on said carrier prior to movement of said carrier.

10. A carrier, a tool-holder pivoted thereon, and means operatively connected with said holder adapted when moved in one direction to rock the holder into operative position and advance the carrier and holder, and when moved in an opposite direction to rock the holder into inoperative position and withdraw the carrier and holder.

11. A carrier, a tool-holder having relative movement thereon, and positively actuated means having movement relative to and cooperating with said tool-holder to move the same on said carrier.

12. A carrier, a tool-holder carried by and movable relative thereto, a slide, cooperating surfaces on said slide and holder, and positively actuated means positively connected to said slide for moving the same to engage said cooperating surfaces and thereby move the holder relative to the carrier.

13. A carrier, a tool-holder pivoted thereon, an adjustable abutment on the carrier for limiting the rocking movement of the holder, and a slide engaging said holder and adapted when moved in one direction to rock the holder against said abutment.

14. A carrier, a tool-holder pivoted thereon and having opposed oppositely inclined spaced surfaces, a slide having a pair of inclined surfaces spaced at a less distance than are the surfaces on said slide and adapted to engage therewith, and means for moving the slide to rock the holder and move the carrier therethrough.

15. A carrier, a tool-holder carried by and movable relative thereto, operating means associated withthe holder for moving the same relative to the carrier, and means between the carrier and the operating means for retarding movement of the carrier.

16. A carrier, operating means, a toolholding member interposed therebetween and supported by said carrier for movement thereon, and means interposed between said carrier and operating means for retarding movement of the carrier.

17. A vertically slidable carrier, a toolholder pivoted thereon, a slide cooperating with the tool-holder for rocking the same and moving the carrier therethrough, and means between the slide and carrier for re tarding the downward movement of the carrier.

18. A carrier, a tool-holder movable thereon, means associated with the holder for moving the same on the carrier and acting therethrough to move said carrier, and normally active means between the slide and carrier for retarding the movement of the latter.

19. A carrier, a slide, a tool-holder interposed therebetween and supported by said carrier for movement thereon, a spring in terposed between said carrier and slide, for retarding movement of the carrier, and means for adjusting the; spring.

20. A tool-carrier, a tool-holder movable thereon,.and means having a wedge for moving said tool-holder into operative. position and acting therethrough to move the carrier.

21. A carrier, a tool-holder movable-thereon! and having an inclined face, and a slide having a similarly inclined surface adapted 

